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Optimize window blur calculation.

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This commit is contained in:
Kristian Høgsberg 2008-11-08 23:27:27 -05:00
parent 2f2cfae227
commit 10bdd298b8
4 changed files with 11 additions and 6 deletions
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10
cairo-util.c
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@ -101,13 +101,13 @@ buffer_create_from_cairo_surface(int fd, cairo_surface_t *surface)
}
void
blur_surface(cairo_surface_t *surface)
blur_surface(cairo_surface_t *surface, int margin)
{
cairo_surface_t *tmp;
int32_t width, height, stride, x, y, z, w;
uint8_t *src, *dst;
uint32_t *s, *d, a, p;
int i, j, k, size = 23, half;
int i, j, k, size = 17, half;
uint8_t kernel[100];
double f;
@ -131,6 +131,9 @@ blur_surface(cairo_surface_t *surface)
s = (uint32_t *) (src + i * stride);
d = (uint32_t *) (dst + i * stride);
for (j = 0; j < width; j++) {
if (margin < j && j < width - margin &&
margin < i && i < height - margin)
continue;
x = 0;
y = 0;
z = 0;
@ -153,6 +156,9 @@ blur_surface(cairo_surface_t *surface)
s = (uint32_t *) (dst + i * stride);
d = (uint32_t *) (src + i * stride);
for (j = 0; j < width; j++) {
if (margin <= j && j < width - margin &&
margin <= i && i < height - margin)
continue;
x = 0;
y = 0;
z = 0;

2
cairo-util.h
View File

@ -19,6 +19,6 @@ struct buffer *
buffer_create_from_cairo_surface(int fd, cairo_surface_t *surface);
void
blur_surface(cairo_surface_t *surface);
blur_surface(cairo_surface_t *surface, int margin);
#endif

2
pointer.c
View File

@ -48,7 +48,7 @@ draw_pointer(int width, int height)
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke_preserve(cr);
cairo_fill(cr);
blur_surface(surface);
blur_surface(surface, INT_MAX);
pointer_path(cr, hotspot_x, hotspot_y);
cairo_stroke_preserve(cr);

3
window.c
View File

@ -89,7 +89,7 @@ draw_window(void *data)
rounded_rect(cr, 1, 1, window->width - 1, window->height - 1, radius);
cairo_stroke_preserve(cr);
cairo_fill(cr);
blur_surface(surface);
blur_surface(surface, 16 + radius);
cairo_translate(cr, -5, -3);
cairo_set_line_width (cr, border);
@ -148,7 +148,6 @@ draw_window(void *data)
cairo_stroke_preserve(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
cairo_destroy(cr);
if (window->buffer != NULL)